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Finding the Fourth Proportional to 52,491.76, 72,437.64 and 28,618.62

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Solution

The fourth proportional to 52,491.76, 72,437.64 and 28,618.62 is: 39,493.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,491.76 : 72,437.64 = 28,618.62 : x
  2. Step 2: Convert to fraction form
    52,491.76/72,437.64 = 28,618.62/x
  3. Step 3: Cross multiply
    52,491.76x = 72,437.64 × 28,618.62
  4. Step 4: Simplify right side
    52,491.76x = 2,073,065,292.86
  5. Step 5: Solve for x
    x = 2,073,065,292.86/52,491.76
  6. Step 6: Final answer
    x = 39,493.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.